Steve the pants size IMO is much less critical. So, what I am saying is that you could buy the next size larger in pants if you need the length w/o risking a leak. Of course the true expert on the pants is the maker Mr Sewell. He has been very patient with me and helped me a long way on my 4 suits. Heck he even made the XXL because I pestered him like a fat kid in a candy store. I later lost some weight and had to buy a diff suit in XL, but at the price he sells them for I did not mind.
When u contact him tell him I sent you and remind him that we really want some colour options like yellow or green.
http://vimeo.com/24956743 This video was made by SwimJim and it really shows the Hydroglove at its best.